I'd agree with everyone who's advising to use the forums. Think of us as a big car club. Advertising here - and the word of mouth generated by the ad - costs nothing. It's a good way to reach a national audience, and in our case, even an international audience.
Say you place an ad here, on FABO, on FBBO, etc. You might get some tire kickers, but you'll also generate some interest in the car being out there.
Let's say I've got a guy who's looking at my E-body and is serious about making an offer, but I won't sell. I do one of two things: I send him here to look over the ads, with an emphasis on one or two or I send him to a buddy who has a couple for sale. This guy turns into a potential buyer for yours.